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Pass in ModelLoadingService to the inference rescorer. #8

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@jtibshirani jtibshirani commented Mar 3, 2020

Note: this PR is just meant for discussion and is not intended as a draft or prototype.

This PR shows how to pass in a custom service to a rescorer. It adds one commit
on top of @davidkyle's ongoing rescore prototype (elastic#52059).

The approach is pretty hacky. I am keeping an eye out for refactors in the search plugin
code that could make this cleaner.

MultiSearchAction.INSTANCE,
multiSearchRequestBuilder.request(),
multiSearchResponseActionListener);
multiSearchRequestBuilder.request()).actionGet();

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This is the same problem we have with the FetchSubPhase PR, we have make a blocking call somewhere

jtibshirani pushed a commit that referenced this pull request Mar 11, 2021
…astic#69765)

Previously we did not resolve the attributes recursively which meant that if a field or expression was re-aliased multiple times (through multiple levels of subqueries), the aliases were only resolved one level down. This led to failed query translation because `ReferenceAttribute`s were pointing to non-existing attributes during query translation.

For example the query

```sql
SELECT i AS j FROM ( SELECT int AS i FROM test) ORDER BY j
```

failed during translation because the `OrderBy` resolved the `j` ReferenceAttribute to another `i` ReferenceAttribute that was later removed by an Optimization:

```
OrderBy[[Order[j{r}#4,ASC,LAST]]]                                             ! OrderBy[[Order[i{r}#2,ASC,LAST]]]
\_Project[[j]]                                                                = \_Project[[j]]
  \_Project[[i]]                                                              !   \_EsRelation[test][date{f}#6, some{f}#7, some.string{f}#8, some.string..]
    \_EsRelation[test][date{f}#6, some{f}#7, some.string{f}#8, some.string..] ! 
```

By resolving the `Attributes` recursively both `j{r}` and `i{r}` will resolve to `test.int{f}` above:

```
OrderBy[[Order[test.int{f}elastic#22,ASC,LAST]]]                                     = OrderBy[[Order[test.int{f}elastic#22,ASC,LAST]]]
\_Project[[j]]                                                                = \_Project[[j]]
  \_Project[[i]]                                                              !   \_EsRelation[test][date{f}#6, some{f}#7, some.string{f}#8, some.string..]
    \_EsRelation[test][date{f}#6, some{f}#7, some.string{f}#8, some.string..] ! 
 ```

The scope of recursive resolution depends on how the `AttributeMap` is constructed and populated.

Fixes elastic#67237
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